# Heading 1

## Heading 2

### Heading 3

#### Heading 4

##### Heading 5

###### Heading 6

**bold**

__bold__

*italic*

_italic_

***bold italic***

~~strikethrough~~

`inline code`

<u>underline</u>

H<sub>2</sub>O

X<sup>2</sup>

- Item 1
- Item 2
- Item 3

* Item A
* Item B
* Item C

+ Item X
+ Item Y
+ Item Z

1. First
2. Second
3. Third

- Parent
  - Child
    - Grandchild

[Google](https://google.com)

[Link with title](https://example.com "Title")

<https://example.com>

![Alt text](image.png)

![Alt](url "title")

[ref]: https://example.com
[text][ref]

Use `code` inline

```javascript
console.log("hello");
```

```python
def greet():
    print("Hi")
```

```html
<h1>Hello</h1>
```

    indented code block

> Simple blockquote

> Line 1
> Line 2

> Outer
>> Nested

> **Bold** and `code`

> - List item
> - Another

| Left | Center | Right |
|:---|:---:|---:|
| A | B | C |
| 1 | 2 | 3 |

| Name | Age |
|------|-----|
| Alice | 25 |
| Bob | 30 |

---

***

___

- - -

- [ ] Incomplete task

- [x] Completed task

- [ ] Task 1
- [x] Task 2
- [ ] Task 3

Here is a footnote[^1]

[^1]: Footnote text

==highlighted text==

term
: definition

Automatic URL: https://example.com

:smile: :heart: :+1: